普通流体和磁性流体中的毛细重力波阻力
Capillary-gravity wave resistance in ordinary and magnetic fluids
摘要：
波浪阻力是与流体自由表面处的运动扰动所产生的波浪发射相关联的拖曳力。在毛细管-重力波的情况下，随着扰动速度的增加，它经历从零到有限值的过渡。第一次设计了一个实验，以获得波阻作为速度的函数。粘性的影响进行了探讨，和磁流体被用来扩大临界转速的可用范围。阈值与所提出的理论是很好的协议。然而，与理论模型相反，实测波阻揭示了阈值后的非单调速度依赖性。
英文摘要：
Wave resistance is the drag force associated to the emission of waves by a moving disturbance at a fluid free surface. In the case of capillary-gravity waves it undergoes a transition from zero to a finite value as the speed of the disturbance is increased. For the first time an experiment is designed in order to obtain the wave resistance as a function of speed. The effect of viscosity is explored, and a magnetic fluid is used to extend the available range of critical speeds. The threshold values are in good agreement with the proposed theory. Contrary to the theoretical model, however, the measured wave resistance reveals a non monotonic speed dependence after the threshold.
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